A witness told authorities a minivan traveling at a high rate of speed struck the center wall, traveled across all lanes of traffic, hit a freeway sign and pole, then flipped over and caught on fire.

The 23-year-old female driver was able to get out of the vehicle, according to authorities. She was taken to a local hospital to be evaluated.

A spokeswoman with the Milwaukee County Sheriff's Department confirms that no one else was in the vehicle at the time of the crash.

The driver woman said her 3-year-old son was still in the car, but no child was found inside. Deputies shut down the freeway and searched for the child. The driver gave contact information for a day care center and a relative, and deputies verified that the child was with a relative.

All lanes reopened around 6:40 a.m.

The woman was cited for driving too fast for conditions, operating without a valid license and operating without insurance.